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WAEC Chemistry AI Practice

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Note: Diagram-based questions are coming soon. WAEC Biology Paper includes ~5 diagram questions.

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Question 181

Which property best explains why metals are good conductors of electricity?
Structure and properties of matterStructure and properties of mattermedium

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Question 182

Which element has the highest electronegativity value?
PeriodicityPeriodicityeasy

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Question 183

In a reaction where the concentration of reactants doubles and the rate quadruples, what is the order of reaction with respect to that reactant?
Rates of reactions (kinetics)Rates of reactions (kinetics)medium

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Question 184

At equilibrium in a reversible reaction, what is true about the rates of the forward and reverse reactions?
EquilibriumEquilibriumeasy

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Question 185

Which of the following substances acts as a Lewis acid?
Acids, bases, saltsAcids, bases, saltsmedium

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Question 186

In the redox reaction: Zn + CuSO4 → ZnSO4 + Cu, which species is oxidized?
Redox reactionsRedox reactionseasy

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Question 187

Which type of polymerization involves the stepwise reaction between bifunctional monomers, often producing by-products?
Polymer chemistryPolymer chemistrymedium

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Question 188

How many moles of oxygen gas (O2) are required to completely react with 3 moles of propane (C3H8) in combustion?
Calculation chemistry (stoichiometry)Calculation chemistry (stoichiometry)hard

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Question 189

Which of the following explains why ionic compounds have high melting points?
Structure and properties of matterStructure and Properties of Mattermedium

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Question 190

Which element in Period 3 has the highest first ionization energy?
PeriodicityPeriodicitymedium

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